Iliotibial Band Syndrome
Iliotibial band syndrome is a common source of knee pain. The most common symptom is lateral knee pain caused by inflammation of the distal portion of the iliotibial band. Occasionally, however, the iliotibial band becomes inflamed at its proximal origin and causes referred hip pain. The iliotibial band is a thick band of fascia that crosses the hip joint and extends distally to insert on the patella, tibia, and biceps femoris tendon.
Iliotibial band syndrome occurs frequently in runners or cyclists, and is caused by a combination of overuse and biomechanical factors.In some athletes, repetitive flexion and extension of the knee causes the distal iliotibial band to become irritated and inflamed resulting in diffuse lateral knee pain. Iliotibial band syndrome can cause significant morbidity and lead to cessation of exercise. Although iliotibial band syndrome is easily diagnosed clinically, it can be extremely challenging to treat.